Licensed software differs from open source software. Licensed software is owned by the company that creates and supports it$,$ so a user of licensed software is required to $q,$ versus open source software which is available $q,$

Write code; as code that needs to be processed and compiled

Download and install for free; by companies for a payment fee

all answers are correct.

Purchase a license to use; free or for voluntary donation

Install and fix bugs; write code to contribute to community